Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/1678
DC FieldValueLanguage
dc.contributor.advisor蔡志成zh_TW
dc.contributor.advisorTsai Jyh-Cherngen_US
dc.contributor.author王文瑋zh_TW
dc.contributor.authorWang, Wen-Weien_US
dc.date1998zh_TW
dc.date.accessioned2014-06-05T11:41:23Z-
dc.date.available2014-06-05T11:41:23Z-
dc.identifier.urihttp://hdl.handle.net/11455/1678-
dc.description.abstract摘要 目前機 械設計人員已經可以利用許多電腦輔助工具來協 助工作,然而 公差設計的工作卻多仍停留在依賴經驗值或試 誤法來完成,在效率 的考量下,以一套系統化的分析程序和 電腦輔助工具來進行公差設 計與分析已有實際的需求。本文 即針對上述的需求,在架構開放的 實體模型CAD軟體環境 下,發展一套應用軟體。 在以公差設計資料庫為主軸的架構下,本文所發展之系 統可依 其功能分成五個主要的模組以及其他次要的輔助功能 程式,這些模 組分別為(1)特徵判斷與資訊擷取模組,(2)公差 標註與資訊擷取模組 ,(3)配合標註模組,(4)公差網路建構模 組,(5)公差分析介面模組 。第一個模組從B-rep實體模型中 將特徵資訊擷取出來,並且進行 特徵坐標判定與特徵凹凸判 斷,第二個模組將標註完成的公差資訊 擷取出來,並且進行 公差資訊整合,第三個模組輔助使用者將公差 配合所需的資 訊加入,第四個模組處理特徵與公差配合資訊,並建 立成有 意義的公差網路,第五個模組則將公差網路資訊轉成公差運 算系統的格式以進行公差分析。公差分析最後得到一整體產 品之誤 差範圍,讓設計者瞭解公差累積對整個產品的影響, 作為公差設計 時的參考依據。本文並且以一含C軸之CNC 車削中心主軸為例, 說明系統的使用與運作流程。zh_TW
dc.description.abstractAbstract Although mechanical designers can take the advantage of computer-aided tools to assist their tasks, yet tolerance design still depends on experience or trial and error method. From the viewpoint of design efficiency, tolerance design with systematical analysis and computer-aided tools is an immediate requirement. This thesis is intended to develop tolerancing software in CAD environment with an open architecture. Based on the tolerance design database, the system developed by this thesis contains five main modules and several subsidiary programs. These modules are (1) feature extraction module, (2) tolerance specification extraction module, (3) fitting assignment module, (4) Tolerance Network construction module, and (5) tolerance analysis interface. The feature extraction module extracts feature information from B-rep models. It also determines feature coordinates and detects feature types. The tolerance specification extraction module deals with tolerance information, including conventional dimensional tolerances and geometric tolerances. The fitting assignment module assists users to assign fitting and tolerancing attributes. The Tolerance Network construction module constructs the Tolerance Network based on feature, tolerancing and fitting information. The tolerance analysis interface transforms the Tolerance Network data to the format for an existing tolerance analysis software. Product error resulting from tolerance analysis is shown as an error ellipsoid. It helps designers to understand the effects of tolerance accumulation and can be used as a reference for tolerance design. The spindle assembly of a CNC turning center is used as an instance to illustrate the usage and operation flow of the developed system.en_US
dc.language.isoen_USzh_TW
dc.publisher機械工程學系zh_TW
dc.subjectTolerance Designen_US
dc.subject公差設計zh_TW
dc.subjectSolid Modelen_US
dc.subjectFeatureen_US
dc.subjectTolerance Networken_US
dc.subjectTolerance Analysisen_US
dc.subject實體模型zh_TW
dc.subject特徵zh_TW
dc.subject公差網路zh_TW
dc.subject公差分析zh_TW
dc.titleCAD環境下電腦輔助公差設計與分析系統zh_TW
dc.titleDEVELOPMENT OF A COMPUTER-AIDED TOLERANCE DESIGN AND ANALYSIS SYSTEM IN CAD ENVIRONMENTen_US
dc.typeThesis and Dissertationzh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.grantfulltextnone-
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